Originally posted by zaiko Hi
I did some research and for most of the pictures it seems that the EV is between 3 and 4. I'm not sure exactly, as most EV calculators don't have 1/3 EV steps and go as high as ISO 6400 and not more...
Well the exact light level to trigger the FF is influenced by many factors (light color, lense, aperture…) so we can't say it happens at a specific, precise EV.
With a FA 31 wide open under halogen light, mine gets some FF at EV 2 or 3, then is gets worse as the light decreases.